package com.atguigu.common.valid;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import java.util.HashSet;
import java.util.Set;

/**
 * 自定义校验器
 */
public class ListValueConstrainValidator implements ConstraintValidator<ListValue,Integer> {
    //存储所有可选的值
    private Set<Integer> set=new HashSet<>();
    //初始化方法
    @Override
    public void initialize(ListValue constraintAnnotation) {
        int [] vals=constraintAnnotation.vals();
        for (int val : vals) {
            set.add(val);
        }

    }

    /**
     * 判断校验是否成功
     * @param integer 需要校验的值
     * @param constraintValidatorContext
     * @return
     */
    @Override
    public boolean isValid(Integer integer, ConstraintValidatorContext constraintValidatorContext) {
        return set.contains(integer);
    }
}
